1 /* 2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of The DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1980, 1986, 1989, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)netisr.h 8.1 (Berkeley) 6/10/93 67 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $ 68 */ 69 70 #ifndef _NET_NETISR_H_ 71 #define _NET_NETISR_H_ 72 73 /* 74 * The networking code runs off software interrupts. 75 * 76 * You can switch into the network by doing splnet() and return by splx(). 77 * The software interrupt level for the network is higher than the software 78 * level for the clock (so you can enter the network in routines called 79 * at timeout time). 80 */ 81 82 /* 83 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status 84 * word which is used to de-multiplex a single software 85 * interrupt used for scheduling the network code to calls 86 * on the lowest level routine of each protocol. 87 */ 88 #define NETISR_RESERVED0 0 /* cannot be used */ 89 #define NETISR_IP 2 /* same as AF_INET */ 90 #define NETISR_ARP 18 /* same as AF_LINK */ 91 #define NETISR_MPLS 21 /* MPLS */ 92 #define NETISR_USB 25 /* USB soft interrupt */ 93 #define NETISR_PPP 27 /* PPP soft interrupt */ 94 #define NETISR_IPV6 28 /* same as AF_INET6 */ 95 #define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */ 96 #define NETISR_BLUETOOTH 31 97 98 #define NETISR_MAX 32 99 100 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 101 102 #ifndef _SYS_TYPES_H_ 103 #include <sys/types.h> 104 #endif 105 #ifndef _SYS_QUEUE_H_ 106 #include <sys/queue.h> 107 #endif 108 #ifndef _SYS_PROTOSW_H_ 109 #include <sys/protosw.h> 110 #endif 111 #ifndef _SYS_MSGPORT_H_ 112 #include <sys/msgport.h> 113 #endif 114 #ifndef _NET_NETMSG_H_ 115 #include <net/netmsg.h> 116 #endif 117 118 #endif 119 120 #ifdef _KERNEL 121 122 void netmsg_so_notify(netmsg_t); 123 void netmsg_so_notify_abort(netmsg_t); 124 void netmsg_so_notify_doabort(lwkt_msg_t); 125 126 #endif 127 128 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 129 130 /* 131 * Temporary pktinfo structure passed directly from the driver to 132 * ether_input_pkt(), allows us to bypass numerous checks. 133 */ 134 struct pktinfo { 135 int pi_netisr; /* netisr index, e.g. NETISR_IP */ 136 uint32_t pi_flags; /* PKTINFO_FLAG_ */ 137 int pi_l3proto; /* layer3 protocol number */ 138 }; 139 140 #define PKTINFO_FLAG_FRAG 0x1 141 142 /* 143 * NETISR_xxx registrations 144 */ 145 struct netisr { 146 netisr_fn_t ni_handler; /* packet handler function */ 147 netisr_hashck_t ni_hashck; /* hash check function */ 148 netisr_hashfn_t ni_hashfn; /* characterize pkt return hash */ 149 struct netmsg_base ni_netmsg; /* for sched_netisr() (no-data) */ 150 }; 151 152 #endif 153 154 #ifdef _KERNEL 155 156 #define NETISR_ROLLUP_PRIO_TCP 200 157 #define NETISR_ROLLUP_PRIO_IFSTART 50 158 159 extern lwkt_port netisr_adone_rport; 160 extern lwkt_port netisr_afree_rport; 161 extern lwkt_port netisr_afree_free_so_rport; 162 extern lwkt_port netisr_apanic_rport; 163 extern lwkt_port netisr_sync_port; 164 165 void netisr_register(int, netisr_fn_t, netisr_hashfn_t); 166 void netisr_register_hashcheck(int, netisr_hashck_t); 167 void netisr_register_rollup(netisr_ru_t ru_func, int ru_prio); 168 169 void netisr_characterize(int num, struct mbuf **mp, int hoff); 170 void netisr_hashcheck(int num, struct mbuf *m, 171 const struct pktinfo *pi); 172 int netisr_queue(int, struct mbuf *); 173 int netisr_handle(int, struct mbuf *); 174 175 struct netisr_barrier *netisr_barrier_create(void); 176 void netisr_barrier_set(struct netisr_barrier *); 177 void netisr_barrier_rem(struct netisr_barrier *); 178 179 void netmsg_service_port_init(lwkt_port_t); 180 void netmsg_service_sync(void); 181 void netmsg_sync_handler(netmsg_t); 182 void schednetisr(int); 183 184 #endif /* _KERNEL */ 185 186 #endif /* _NET_NETISR_H_ */ 187